In topology, knot theory is the study of mathematical knots. While inspired by knots which appear in daily life in shoelaces and rope, a mathematician`s knot differs in that the ends are joined together so that it cannot be undone. In mathematical language, a knot is an embedding of a circle in 3-dimensional Euclidean space, R3 (since we`re usin.....
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http://en.wikipedia.org/wiki/Knot_theory
in mathematics, the study of closed curves in three dimensions, and their possible deformations without one part cutting through another. Knots may ... [1 related articles]
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http://www.britannica.com/eb/a-z/k/41
an area of topology that studies mathematical knots (a knot is a closed curve in space formed by interlacing a piece of “string” and joining the ends)
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https://www.storyofmathematics.com/glossary.html
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